The torque peak will be higher at lower RPMs. The sooner you can feed it more air (boost) the higher that number will be and drop off as RPM goes up.
Thats how I got from 145lb-ft @ 3100rpm to 195lb-ft @ 2100rpm, 1psi boost @2k for the first time vs 7psi @2000rpm for the second time.
Here is a turbo comparison between my old KKK K26 and the Garrett GT2256V. (I couldn't change the colors, but obviously the GT2256V is the higher lines.) See what a little more air and a turbo thats not a 70's design paddle wheel can do?
